45.6.9.10 Node Action

Depending on the identifier, the node is affected – or not – by the LIN response. Consequently, after sending or receiving the identifier, the USART must be configured. There are three possible configurations:

  • PUBLISH: the node sends the response
  • SUBSCRIBE: the node receives the response
  • IGNORE: the node is not concerned by the response, it does not send and does not receive the response

This configuration is made by the field Node Action (NACT) in the US_LINMR (see USART LIN Mode Register).

Example: a LIN cluster that contains a Host and two Clients:

  • Data transfer from the Host to the Client1 and to the Client2:
    • NACT(Host)=PUBLISH
    • NACT(Client1)=SUBSCRIBE
    • NACT(Client2)=SUBSCRIBE
  • Data transfer from the Host to the Client1 only:
    • NACT(Host)=PUBLISH
    • NACT(Client1)=SUBSCRIBE
    • NACT(Client2)=IGNORE
  • Data transfer from the Client1 to the Host:
    • NACT(Host)=SUBSCRIBE
    • NACT(Client1)=PUBLISH
    • NACT(Client2)=IGNORE
  • Data transfer from the Client1 to the Client2:
    • NACT(Host)=IGNORE
    • NACT(Client1)=PUBLISH
    • NACT(Client2)=SUBSCRIBE
  • Data transfer from the Client2 to the Host and to the Client1:
    • NACT(Host)=SUBSCRIBE
    • NACT(Client1)=SUBSCRIBE
    • NACT(Client2)=PUBLISH